23rd May 2024

Some numbers are ‘perfect’

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Perfect Number is a number which can be expressed as the sum of all factors of the numbers excluding itself but including ‘1’.

6, 28, 496 and 8128 are the first four perfect numbers.

6 = 1 + 2 + 3

28 = 1 + 2 + 4 + 7 + 14

496 = 1 + 2 + 4 + 8 + 16 + 31 + 62 + 124 + 248

8128 = 1 + 2 + 4 + 8 + 16 + 32 + 64 + 127 + 254 + 508 + 1016 + 2032 + 4064

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